Trolley.



H. SHAFPERT.

TROLLEY.

APPLICATION FILED FEB. 19, 1913.

Patented Mar. 17, 1914.

ATTORNEY INVENTOR srarasar NT @FTQ.

TROLLEY.

Application filed February 19, 1913.

Specification of Letters Patent.

Patented Mar. 17, 121%.

Serial No. 749,419.

.to the accompanying drawing.

This invention relates to trolleys, and is an improvement upon my Patent Number 1,040,789, granted October 8, 1912.

Besides having the same objects in view as disclosed in the above mentioned patent, the present invention aims to provide a trolley of the above type that is more positive in its action, the harp of the trolley having novel means for separating the retaining members forming part of the harp.

The present invention will be hereinafter specifically described and then claimed, and

reference will now be had to the drawing, wherein Figure 1 is a side elevation of the harp, Fig. 2 is a rear elevation of the same, Fig. 3 is a longitudinal sectional view of the harp, Fig. 4 is a cross sectional view taken on the line IVIV of Fig. 3. Fig. 5 is a similar view taken on the line VV of Fig. 1. Figs. 6 and 7 are detail views.

To put my invention into practice, 1 provide the upper end of a trolley pole 1 with an integral rectangular hollow or box-like harp 2 that has side walls 3, a front wall 4 and a rear wall 5, said side walls extending above the front and rear walls, with the front wall 4. of a less height than the rear wall 5, as best shown in Fig. 3.

The side walls 3 are provided with a transverse pin 6 adjacent to the front wall 4 and revolubly mounted upon the pin 6 is a circumferentially grooved trolley wheel 7 adapted to engage a trolley wire that extends over the upper edges of the walls 1 and 5.

The side walls 3 have the upper edges thereof provided with confronting sockets 8 and arranged in said sockets are slidable headed pins 9 and coiled compression springs 10, said springs engaging the headed pins 9 and retaining said pins in engagement with the outer sides of retaining members 11. The retaining members 11 form the upper ends of sectional parallel arms 12, the sections of each arm being connected together by side plates 13 arranged against the outer sides of said arms. The arms 12 extend downwardly through the harp and through openings 14 provided therefor in the bottom of the harp. The lower sections 15 of the arms 12 are channel-shaped and provided with fiber inserts 16 which are used in lieu of solid arms to reduce the weight of the same. The arms 12 below the harp 2 are surrounded by a strap 17, the latter is supported upon screws 18 projecting from the arms 15. Each end of the strap is annularly disposed and provided with an eye 19 to which is connected a cord or rope 20 whereby the arms 12 can be shifted in the harp. The lower sections 15 of the arms 12 are connected to the pole l by retractile means, preferably in the form of one or more coiled springs 21, as best shown in Figs. 1 and 3. Each of the arms 15 is provided with a block 15 the latter resting upon the bottom of the harp and which prevents the arm from dropping down on the shaft 6. The strap 17 does not rigidly connect the arms 15, but the relation of the sides of the straps 17 with respect to the arms 15 is such as to loosely connect said arms together.

The outer sides of the walls 3 have vertical reinforcing ribs 22 and tubular enlargements 23. Extending through the enlargements 23 are chains or flexible connections 24 that have the lower ends thereof connected to the arms 12 and the upper ends thereof connected to the outer sides of the retaining members 11. The retaining members 11 have the confronting sides thereof provided with overhanging longitudinal flanges 25 adapted to overhang a trolley wire resting upon the trolley wheel 7.

Engaging the arms 12, within the harp 2 is a transverse bar 26 that is slidably mounted in grooves 27 provided therefor in the confronting walls 3 of the harp. Fixed to the transverse bar 26 are coiled compression springs 28 surrounding rods 29 connected to said bar. The rods 29 extend through openings 30 provided therefor in the front wall 4: and the ends of said rods are screw threaded to accommodate knurled nuts 31. The rods 29, bar 26 and springs 28 provide means for cushioning the movement in one direction of the retaining members 11 operating against the bar 26, the latterbearing against the arms and normally maintaining said arms in an upright position. By adjusting the nuts 31 upon the rods 29 the tension of the springs 28 can be increased or diminished when desired.

Arranged within the harp 2 and supported by the front wall 4 thereof is a V-shaped separating member 32, the rear end of which normally extends between the arms 12, whereby when the rope or cord 20 is pulled upon the retaining members 11 will be separated suiiiciently to permit of the harp be-' ing moved away from the trolley wire.

What I claim is 1. In a trolley harp, the combination with a pole, of a box-like hollow harp carried by the upper end thereof, arms extending through the bottom of said harp, a cord attached to the lower ends of said arms, parallel retaining members carried by the upper ends of said arms, spring pressed pins engaging the outer sides of said members, a trolley wheel journaled in said harp below said members, a spring pressed bar engaging said arms within said harp, and means within said harp and engaging said arms for separating said arms.

2. In a trolley harp, the combination with a trolley pole, of a box-like harp formed integral with the end thereof, arms extending through the bottom of said harp, spring pressed retaining members carried by said arms, a trolley wheel journaled in said harp below said retaining members, a spring pressed bar arranged within said harp and engaging said arms, a separating member arranged in said harp and engaging said arms for separating said arms when shifted, and connections between said pole and said arms for maintaining said arms in their normal position.

In testimony whereof I afiix my signature in the presence of two witnesses.

HENRY SHAFFERT. Witnesses:

MAX II. SROLOVITZ, KATHERINE Ennnr'r.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. C. v 

